docs: def setup(self):
          """Initialize the consumer, setting up needed attributes and connecting
          to RabbitMQ.
  
          """
          LOGGER.info('Initializing for %s', self.name)
  
          if 'consumer' not in self.consumer_config:
              return self.on_startup_error(
                  '"consumer" not specified in configuration')
  
          self.consumer = self.get_consumer(self.consumer_config)
  
          if not self.consumer:
              return self.on_startup_error(
                  'Could not import "{}"'.format(
                      self.consumer_config.get(
                          'consumer', 'unconfigured consumer')))
  
          self.setup_instrumentation()
          self.reset_error_counter()
          self.setup_sighandlers()
          self.create_connections()